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Showing content with the highest reputation on 07/01/19 in all areas

  1. 7 points
    Hi Guys, I present you the second image taken with my Moravian G4-16000 camera mounted on my modified TeleVue NP101is. Images and technical information below. M13 globular cluster and its galactic area : Full Resolution image 4k x 4k here : www.poigetdigitalpics.com/G4-16000/M13.htm Full Resolution image here : http://www.poigetdigitalpics.com/Fichiers_Divers/M13new_image_Annotated.jpg Enjoy ? Florent
  2. 5 points
    On the first clear evening we had, I think it was the 4th Jan. I managed to set up and take some pictures, have attached my new dew heater which I found to be excellent in use, I tried some astrophotography. Setting up with my Sony A390 I took a few pics which disappointingly were out of focus, but one turned out to be okay This is a 20 second exposure at f2 with the ISO set at 800. The photo was worked in L.R to give it some clarity. Keith
  3. 4 points
    We were lucky enough to spend two weeks over Xmas and New Year on La Palma with the family. It was my first visit to the island and loved the place. First week we stayed at the Northwest (Puntagorda), that coincided with full moon, so did not do much imaging wise. However, a very memorable moment was when stepping outside between the main curse and dessert of Xmas eve dinner and within 5 seconds of looking up, I saw a large fireball meteor sweeping accross the sky and breaking up into several pieces. Second week we stayed about 10mins drive from Santa Cruz, so was worried about light pollution from the capital, but the first night it become obvious that the sky was still one of the best I've ever seen. The small light pollution is in the form of sodium lights, so can be dealt with by filters (apart from some flashing LED xmas lights around). The equipment I took was a Fuji X-T1, modded Canon 6D, Samyang 135mm and 35mm lenses, and Fornax lightrack II. Unfortunately, at the end I couldn't use the Canon as I found out there that its remote release connector is different, I use a Canon compatible intervallometer for the Fuji, and just assumed it was the same for the 6D. At home I've been using the 6D with the laptop, which I did not take with me to minimise the amount of kit. Learnt the hard way that everything needs to be tested before the trip and assume nothing. Anyway, I was enjoying using the X-T1 / 135mm combo on the Fornax, it was very quick to set up and worked very well. Fast lens meant that max exposure I needed was 2mins, which the fornax coped with easily. We visited the GTC and was hoping to see one of the other telescopes, but I've messed up the booking and bought tickets for the GTC twice, so that will have to be another time. Also drove up to the observatories in the evening and was hoping to do some imaging, I unpacked the equipment, but was so cold with strong winds (at some point I had 3 jackets on) that I basically bailed and just did some very wide field shots. The fun bit was when we got too cold and was ready to go down, the car wouldn't start. ? It was around 10pm, nobody around, no moon, so pitch dark. I'm still not sure why the car battery went flat, I run the Fornax off the cigarette lighter socket, but its power consumption could not be the reason. To have voltage in the cigarette lighter, the key had to be turned to ignition on, so I guess in that state something was taking current in the car, we did not have any interior / exterior lights on. We thought we might have to sleep in the car, when after about 20mins I saw a car driving down, jumped in front to ask for help, and the chinese couple inside very kindly helped to push the car to jump start it. This was a major struggle as the parking platform was lower than the road, so the car had to be pushed up the ramp. When the car eventually started I was ready to hug those friendly people but they were in a hurry... The sunset and the views of the milky way were amazing up there, still I've decided after this adventure that I rather put up with the little light pullution I have on the balkony of the nice warm house and my bed nearby. So, overall a few mishaps, but it just means that I definitely have to go back again in the summer, timed so that it coincides with new moon. Anyway below are some of the quickly processed images I took, also have some 46P data but haven't managed to process that to give anything decent yet. All processed in Astroart / Gimp, however my processing skills are not very advanced, still need to learn about layers, masking, etc.
  4. 4 points
    My garden faces north so this is the first time I managed (have bothered) to sit down and sketch it this apparition BV as it appeared over my house. I confess to wondering what on Earth the bright orange star was for a few seconds! Here's what I sketched (in rough then transferred to my notebook). And below it, the Calsky view with my scope. Not a bad likeness considering the current apparent size of 7.43 arc seconds!
  5. 4 points
    Cloudy as usual so I entertain myself with processing other peoples data. This time from the public data pool at Astrobin posted by Robert Huerbsch. 6 hours of HaOiii data from a 5" refractor. I mixed Ha and Oiiii 50:50 as a green channel and I aimed at processing it in a way that would make it look "natural" or RGB. All done in PS. Is it just me that see it as an alien running towards the finish line in an interstellar marathon?
  6. 4 points
    ...... you could hang a flat screen T.V on the obelisk.....
  7. 3 points
    Took the advise of someone on here to try 800 iso instead of 1600,now I see what you were talking about,not a great shot,not enough time,clouded up.just thought I would put it up anyway,thanks for the advice.
  8. 3 points
    I'm new to astronomy, I got my first telescope in November (StarMax 90mm f/13), I was really happy with the view of the moon and double stars, but disappointed I could see but barely make out nebula (initially the ring nebula). I also tried to take a photo of the moon with my phone but trying to get a stable shot was too difficult, even with a basic smartphone adapter. I did a bit of research, found about about Video Astronomy/Electronically Assisted Astronomy (EAA) and decided I needed a better mount and took the opportunity to get a faster telescope (StarTravel 102 f5/). I really like the Sky-Watcher -102 AZ GTe with the ZWO ASI 224MC. I've only used it for 4 nights as there is so much cloud about but it's allowed me to take images of things my eyeball wouldn't see. Although my setup is below the minimum specification most would consider for imaging and entry level for visual observations I think I've found a setup that seems to work for me. I like that with SharpCap I can get instant results and the day after when it's back to cloudy I can get a bit more out of the images with Deep Sky Stacker and Gimp. I have tried looking through the eyepiece at the Pleiades, that was a pleasure as well. I can see how observing with a big Dobsonian and amazing eyepieces would be great, but many objects seem better with a camera than eyeballs. The Horsehead nebula wasn't found until astrophotography came into being. The photo above was taken on my first night with the setup. The January 2019 issue of Sky at Night Magazine has a review of the Sky-Watcher StarTravel-102 AZ GTe and they give it 4.5 / 5. Combining it with an Explore Scientific UHC filter seems to reduce most of the chromatic aberration and increases contrast relative to the stars, and light pollution. Video Astronomy/EAA seems to offer a great window into both the visual and imaging worlds of astronomy. As First Light Optics say "Your first telescope is arguably the most important because if the views do not amaze and delight, your interest in astronomy will crash and burn on the runway!" I understand cost could be an issue, but if the beginner had a suitable camera Video Astronomy could be as accessible as a Go-To visual setup, and seems more likely to amaze (especially in the skies of a typical house). My question is why is video astronomy not the first suggestion for beginners interested in both visual and imaging?
  9. 3 points
    Maybe a feature wall? Or https://www.muralswallpaper.co.uk/wall-murals/space-mural-wallpaper/
  10. 2 points
    The sky here has been on and off, meaning that it is sometiems clear when I take the last walk with my dog Balder, when it is supposed to be cloudy, and other nights I am set up and ready and everything is ruined by clouds. So, I have entertained myself with public data including this 0.4 hour image (4 x 4 subs of about 80 seconds of R, G, B and Ha) from the Liverpool Telecscope - a 2 metre RC scope on a mountain top on La Palma in the Canary Islands. I wish there had been more data but with a scope this size and a very very nice CCD camera it is still quite presentable.
  11. 2 points
    The best sort of spending! I really liked the Televue Panoptic 24mm in my old 120ED. It just felt right. The Baader Zoom, although a cracking bit of kit, felt very claustrophobic at the longer end of things. For some reason. Big eyepieces just seem cumbersome in the longer scope. The field of view is generous, but this scope isn’t going to be a hyper wide field wonder. So why force things? But, the very best eyepiece in the 120 was a Herschel Wedge for white light solar work! The Baader 2” Ceramic is the best i’ve Seen on one of these scopes (although the Lunt 1 1/4” is splendid for less than half the price). The zoom works really well with this. Paul
  12. 2 points
    New photography blog up https://danielkenealyphotography.com/blog
  13. 2 points
    Haha, great idea, or I could just open the window and let the fog roll in!
  14. 2 points
    Well if it's any consolation to you good people, I've just gone through 3 weeks without a single clear night and I'm in an Australian summer!!! However, I'm now enjoying the best seeing I've ever had here the last couple of nights, so hang in there!!! ?
  15. 2 points
    I would suggest that this requires a bit more thought and research. These days there is little economic point in making one's own telescope, as complete second-hand assemblies are available at low cost if you know where to look. A few people still make their own, but this is to satisfy the urge to create something with their own hands. A couple of years ago I acquired a used OTA (tube assembly) for an 8" Newtonian, complete and just needing eyepieces, a finder and a mount, for 60 pounds - a price that would probably have not covered the cost of the materials to make it up from a mirror blank and metal parts. If you buy a new, ready to use mirror for a 8" Newtonian you will find this is not particularly cheap. If your motivation is lack of cash, and you are good at DIY and figuring out how things work, I suggest you look at the 'Astroboot' website www.astroboot.co.uk and see what catches your eye.
  16. 1 point
    Having used Eq5pro (belt drive) and Eq6 mounts for some time, it has been a source of puzzlement why every time I get different accuracy results. The following have been the same ; power supply , regulated bench supply. levelling and balancing , rigorous. All bolts snipped up before use. Some of those extension pillar bolts have a dance of their own. position, tripod leg bases positioned into drilled out holes in paving. Home position marked on the mount . Time , date , long /lat , time zone , BST all ok. Polar alignment (not a factor in alignment , but useful for settling a view), as close as possible. Synscan versions , 03.39.03 and 04.39.04 alignment stars , either one star if studying one area of the sky. Two stars , low , east and west . Three stars , zenith , then east and west. Aligning, ending in "up" and "right" using a 12mm illuminated reticle. scopes , set accurately on the dovetail . ok , some nights , first star, nearly there . Other nights , about six degrees out . Second star , some nights it's very close to the reticle. Other nights , it might be a degree out. Ok. Alignment done, now goto. some nights , targets are to one side of a x50 fov. Once corrected by the handset , performance is great. Some nights from the start , it'll bang targets centred at x200. Now , in no way am I complaining or moaning . It's just puzzling . I spend a lot of time on binary stars and these are pretty obvious in the fov, so a bit of leeway is ok. Every time I switch on , I don't know what to expect . It certainly comes to a head when my friend with his AVX called Synscan rubbish ! Luckily at outreach or star parties everything behaves ! The only thing that I can think of is ambient temperature acting on poor tolerances of man versus machine ! Any other Synscan dice throwers out there ? old Nick.
  17. 1 point
    Stunning. But Saturn is something else. You just wanna pick it up, it’s like a chalky marble.
  18. 1 point
    A warm welcome from Essex, and we are lucky enough to have the lights turned off at midnight, enjoy your sky`s. Des
  19. 1 point
    The Heq5 or AZ EQ5 GT are both up to the task, if it's a mobile setup then I personally would steer clear of an NEQ6 size mount as it's 10kg heavier.
  20. 1 point
    Hello Florent saw your superb images as well Welcome from "La Manche" France.
  21. 1 point
    Here's an integration and simple stretch of a dozen or so lum frames from the same imaging session (where I managed to guide keeping the target in the centre of the frame). You can see the off axis aberrations in the corners which the field flattener should take care of.
  22. 1 point
    For me it has to be Fornax, a humble constellation, until the HST delivered the Extreme Deep Field Image from within it’s boundaries. Sure, I know any part of the sky would reveal something similar, but this is the little patch of sky where we have gone really, really deep.
  23. 1 point
    Everybody needs more time on M78!!! This is a good composition. Olly
  24. 1 point
    So, in the end, I've gone with the SkyTee II. A couple of people I have been messaging are saying it's rock solid for the 120ed (as well as the 100ed) and for my own peace of mind I feel having spent a lot of money on the scope it would be nuts to use a mount that "just" was able to handle it. Some extra info... Spoke with Martin at FLO, and he said the mounts he'd feel happy with a 120ed on would be the SkyTee II and an AZ4 mount with steel tripod. Obviously he rightly didn't suggest any of the 365 stock (as I was asking him about FLO stock ?) Neil. An extension was mentioned by Zoltan, and also Martin, however they are out of stock at FLO until end of Jan I am informed.
  25. 1 point
    The Baader beginners set are absorptive filters (coloured glass) and won't have the pass band accuracy to match the more expensive dichroic filters. They will have more overlap between colours and less transmission. I assume the similarly priced ZWO ones are also absorptive. The more expensive dichroic ZWO RGB ones (not the similar priced ones for the ASI1600) seem to pass IR so will need to be used with a UV/IR cut filter as well. There have been reports of reflections and halos on bright stars with the ZWO filters (though this predominantly affects the ZWO narrow band filters). If you can afford it, like Ray I would recommend the Baader LRGB CCD Filter set at £211 pounds and have a good reputation though they are £80 more than the ZWO ones. They will last your imaging lifetime. If you buy the absorptive filters which will give satisfactory results for starting out you will invariably switch to more expensive filters in the future if you get the bug, so in the long run will cost you more. Alan
  26. 1 point
  27. 1 point
    Excellent images. Did you have any luck getting the Epsilon sorted?
  28. 1 point
    You're welcome. Thank you for your fine report. I'm so glad that you, your daughter and new friends got to view the pretty sight of a less than two-day-old Moon.
  29. 1 point
    A good coffee table book is definitely required, just need the coffee table. And some coffee.
  30. 1 point
    It is very likely the telescope would not be able to come into focus when using a 1.25 to .965 adapter together with a 1.25 diagonal. I tried the combination on my Tasco 60mm 302675 and was not able to make the scope focus to infinity (it could focus to closer distances). The solutions would be to either get some .965 eyepieces (difficult to find quality ones) or replace the focuser with a 1.25 inch unit. I personally went for the latter. https://www.aliexpress.com/item/CSO-The-60mm-aperture-refraction-astronomical-telescope-plastics-focus-seat-DIY-special-1-25-inch-interface/32864719803.html?spm=a2g0s.9042311.0.0.12eb4c4d5oaMbI I also bought two series 500 plossls, 25mm and 12.5mm from sky's unlimited as well as a Celestron RDF from harrisons. These together make a very nice lightweight inexpensive moon/planet/doubles kit for my little boy.
  31. 1 point
    Steve at ENS recommended to use both, the waterproofness of his covers and the aluminium foil lined cover of the Telegizmo to stop heat build up in the summer. For power I have two of these, one powers my laptop and the other powers everything else, the supply never really dips below 13.1v and I have more than enough Amps to handle to draw on everything: - https://www.nevadaradio.co.uk/amateur-radio/amateur-radio-power-supplies/nevada-psw-30 I run 3 lengths of 2.5mm cable out from a shed/lean to at the side of my home about 22metres, one for my laptop, one for the Mount and the other to my Pegasus UPB, although I could feed the mount from the Pegasus, but the iOptron has the feed in the base, so there was a risk of snagging, so just easier to feed it on it's own cable. The red cable is my Cat5. I then use a pop up tent like this (latest one is green and only about £12) which takes seconds to erect to keep my laptop dry from dew and to stop on stray light hitting the optics during imaging, they wear out after about 2 years as I don't collapse them, I just fold it flat and leave it down the side of the home.: - https://www.ebay.co.uk/itm/Outdoor-Portable-Instant-Changing-Pop-Up-Tent-Toilet-Privacy-Shower-Room-Camping/223305248557?hash=item33fe07af2d:g:XXQAAOSwYYpcKdFc:rk:13:pf:0 HTH NB. Like Ray, I highly rate the Esprits and I have two, the 80 and the 100, only because I got one of them at a real bargain, love them both and they are a pleasure to use. I think Steve at ENS has a SH 80 for £900 with the Flattener which is a fair price, but you might screw him down a little but he's away until the 16th.
  32. 1 point
    Like the definition in the first image, and the colour in the second. BTW, how do you find the coverage without a flattener? I'm still thinking of something similar, but a RC12 with a 16200 camera (Still not sure which yet).
  33. 1 point
    I like both of them, more dust lane structure in the first one, but I love the colours in the second. Great 'close up' images of this target.
  34. 1 point
    My two cents from my experience - OSC cameras and DSLRs like dark skies. If your imaging site is well located, then OSC camera can do great work. If the LP is significant (like you cannot spot Milky Way even in zenith), I would consider mono camera.
  35. 1 point
    Great shot and the alien vision is inspired! lly
  36. 1 point
    A used Kodak KAF-8300 based camera eg QHY9 would be just about doable for slightly over the budget of £600, and a used Canon modded DSLR would be around £100-140. I dont see the benefit of buying a new DSLR for astroimaging given the used prices these days of already modded ones (and I bought my first Canon DSLR brand new and modified it straight away). The ease of use of a DSLR and large field size allow for cropping of defects and are more forgiving when framing. I would recommend cutting your teeth on a DSLR, and then consider progressing to an astro CCD or CMOS.
  37. 1 point
    Haven’t owned a 140 but did have a 200mm carbon fiber tubed OMC which gave excellent views when fully cooled and seeing allowed BUT cool down was a major issue even with the fans running. The scopes corrector would often dew up internally before the primary had cooled !!! I have a C6 now ?
  38. 1 point
    I liked the phrase in a recent weather forecast - "anticyclonic gloom". Just about says it all! I suppose all the kit buying before Xmas has something to do with it.... Chris
  39. 1 point
    That is really nice, Andrew. I particularly like (what I presume is called) the fish nebula in the top right quadrant. It's really clear in this picture ... facing towards the left side of the picture with quite a prominent snout, the things I thought might have been lightning strikes emanating from an amorphous cloud at first glance are actually feelers or gills of some sort, there's a dark patch for its eye and its tail forms a v-shape heading towards the right hand side of the picture. I promise ... I will cut down on the mushrooms!
  40. 1 point
    Florent, Great image! I really like the rework on the imaging train of the TeleVue, looks rock solid. I used the np101is some years ago and it is optically superb. Regards Pieter
  41. 1 point
    This is my first light in 2019. Such a great start! Last few weeks weatger was horribly bad..snow, wind, -20, clouds..than clouds dissapeared there was the full moon..but this year started great. I captured this image on january 2nd. Canon 1300Da + 50mm f1.8 @f4 22x5min iso1600, all images were dithered The "gift" I got for myself is just a dew heater, it works nicely for me. Edited in PixInsight, a hard one honestly.
  42. 1 point
    I’ve seen something similar under my bathroom basin for moving the plug up and down.
  43. 1 point
    Welcome to SGL. You should think about buying nothing more. You have all you need for now - a nice telescope and eyepiece ... oh, and a son! You and he should just have lots of fun looking at and learning about the night sky. If you feel a ‘need’ for anything else, ask again. At present you just need time with your son and the scope. Have fun. ??
  44. 1 point
    That's an excellent sketch Shane, showing some nice detail. Can't wait to see more sketches in the future!
  45. 1 point
    If it's the 25mm vixen npl plossl, it's more than half tidy and is one that won't need replacing for a long while (if ever)! You might want to consider the others in the range to go with it. Hopefully they'll be par-focal which would mean the object you're viewing stays in focus as you swap eyepieces (someone might want to correct me on that). The only downsides are the field of view and the eye relief. I suppose you won't know until you've had a go if 50° is adequate, if not, the BSTs mentioned are excellent and still relatively inexpensive. For me, with plossl eye pieces, the eye relief gets a bit tight below 8mm. You can get a rough feel for this by looking at the line up of eye pieces in the link I posted, very small piece of glass in the 6mm you'd have to get your eye very close to to see through (the 4mm would be smaller). I suppose that will also depend on how old your son is. Again, the BSTs might be a bit easier to look through. Your son's a lucky boy!
  46. 1 point
    Richard I had the original SkyTee mount which looks the same as the AZ5 sold by 365 Astronomy. I usually carried both the 6" Newt and 4" APO Frac which John mentioned in his post. In fact he and I observed together at a SGL star party when I used this setup. I attach a few photos showing the Mount with various scopes the largest was a 6" Meade frac which tells you something. I sold the mount to purchase the SkyTee 2 and to be honest I wish I had kept it. Look forward to Zoltan's comments.
  47. 1 point
    The 18mm and 25mm do quite well in my f/12 127mm Mak. In my f/6 Dob and ED refractor, not so much. If you want much better correction at those focal lengths and have the budget for them, there's the 18mm and 24mm APM UFF eyepieces. Going further upscale, there's the 17.5mm Baader Morpheus. If you've got a 2" focuser and $500, the 17mm ES-92 is pretty sweet and shows slightly more TFOV field than a 32mm Plossl but at about twice the power with no aberrations. I was enjoying sweeping the region around the Double Cluster in my AT72ED last night with it just seeing what large open clusters I had been missing with my longer focal length scopes. It was amazing. ? At 17mm, I've also got the Nagler T4 and AstroTech AF70. The Nagler is obviously quite good, but I much prefer the ES-92. The AF70 is the same as the older Celestron Ultima LX and newer SkyWatcher SWA 70, Olivon 70, Omegon Redline, TS Expanse, and Tecnosky Superwide HD. It has some astigmatism and chromatism at 20% to the edge, but is otherwise quite good. If you can find one for under $70, they're a good deal used or on closeout. The Redline/AF70 style also has the best 1.25"/2" conversion method of any eyepiece I've ever used. The 2" skirt just screws off completely and the 1.25" barrel is then usable at basically the same focal position. Agreed. I have the 9mm Morpheus, 9mm Vixen LV, and 9mm HD-60 (and 10mm Delos), and the HD-60 easily holds its own against the more expensive competition: That 17mm to 24mm range is a tough one to fill on a budget and still be usable with eyeglasses. If 50 degrees is acceptable, try hunting down used 20mm or 25mm Vixen LV eyepieces for $60 or less. Unfortunately, those are the most difficult to find eyepieces of that line on the used market.
  48. 1 point
    By the way Olly, The Liverpool Telescope occasionally spend a bit more time on an object. Have a look at this M51 for which I could download 3.6 hours of data:
  49. 1 point
    I will go just to look at the shiny toys...
  50. 0 points
    Despite the late evening BBC forecast saying clear skies, patchy frost, it was completely cloudy. Not had *any* clear since the 15th Dec (even then it clouded out as soon as the moon started to set). Before then, last time I could do any deep sky work was 29th Oct... ? Dire.
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